Centaurus,
Bumped into a group of pax last week, whilst enjoying a bevvie or two with the F/A's.
Pax offered their (unsolicited) opinion that they really enjoyed the PAs about points of interest enroute: Finke Rvr, Gosse Bluff, Uluru, etc etc.
I guess 'cause we hear them or give them all the time it's a bit hard to objectively know what the pax do want.
As Keg says, it's unusual not to have lots of noses pressed up against the window. Best effort I heard was paxing on an AN 727 service BNE - DRW in '94 or '95. The skipper did a great job!